how to get more compression

sir i have made a compressor and decompressor.. i dont get proper output from decompressor..please tell me weather the code is correct..what thing can be improve?? what should do to improve compression ratio and improve psnr

i have attached the code for compressor and decompressor

[Walter Roberson]

We do not have your image 'wilson1.bmp' to test with. What does it look like and what does the decompressed image look like?

[Jitesh Bhanushali]

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[Jitesh Bhanushali]

sir please reply